/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
 * Copyright (C) 2005 Novell, Inc.
 *
 * Credenza is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * Credenza is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public
 * License along with this program; see the file COPYING.  If not,
 * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 * Author: Anders Carlsson <andersca@imendio.com>
 *
 */

#include <config.h>
#include "credenza-search-bar.h"

#include <glib/gi18n.h>
#include <eel/eel-gtk-macros.h>
#include <gdk/gdkkeysyms.h>
#include <gtk/gtk.h>

struct CredenzaSearchBarDetails {
	GtkWidget *entry;
	gboolean entry_borrowed;
};

enum {
       ACTIVATE,
       CANCEL,
       FOCUS_IN,
       LAST_SIGNAL
}; 

static guint signals[LAST_SIGNAL];

static void  credenza_search_bar_class_init       (CredenzaSearchBarClass *class);
static void  credenza_search_bar_init             (CredenzaSearchBar      *bar);

EEL_CLASS_BOILERPLATE (CredenzaSearchBar,
		       credenza_search_bar,
		       GTK_TYPE_EVENT_BOX)

	
static void
finalize (GObject *object)
{
	CredenzaSearchBar *bar;

	bar = CREDENZA_SEARCH_BAR (object);

	g_free (bar->details);

	EEL_CALL_PARENT (G_OBJECT_CLASS, finalize, (object));
}

static void
credenza_search_bar_class_init (CredenzaSearchBarClass *class)
{
	GObjectClass *gobject_class;
	GtkBindingSet *binding_set;

	gobject_class = G_OBJECT_CLASS (class);
	gobject_class->finalize = finalize;

	signals[ACTIVATE] =
		g_signal_new ("activate",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (CredenzaSearchBarClass, activate),
			      NULL, NULL,
			      g_cclosure_marshal_VOID__VOID,
			      G_TYPE_NONE, 0);

	signals[FOCUS_IN] =
		g_signal_new ("focus-in",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST,
			      G_STRUCT_OFFSET (CredenzaSearchBarClass, focus_in),
			      NULL, NULL,
			      g_cclosure_marshal_VOID__VOID,
			      G_TYPE_NONE, 0);

	signals[CANCEL] =
		g_signal_new ("cancel",
			      G_TYPE_FROM_CLASS (class),
			      G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
			      G_STRUCT_OFFSET (CredenzaSearchBarClass, cancel),
			      NULL, NULL,
			      g_cclosure_marshal_VOID__VOID,
			      G_TYPE_NONE, 0);

	binding_set = gtk_binding_set_by_class (class);
	gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "cancel", 0);
}

static gboolean
entry_has_text (CredenzaSearchBar *bar)
{
       const char *text;

       text = gtk_entry_get_text (GTK_ENTRY (bar->details->entry));

       return text != NULL && text[0] != '\0';
}

static void
entry_icon_release_cb (GtkEntry *entry,
		       GtkEntryIconPosition position,
		       GdkEvent *event,
		       CredenzaSearchBar *bar)
{
	g_signal_emit_by_name (entry, "activate", 0);
}

static void
entry_activate_cb (GtkWidget *entry, CredenzaSearchBar *bar)
{
       if (entry_has_text (bar) && !bar->details->entry_borrowed) {
               g_signal_emit (bar, signals[ACTIVATE], 0);
       }
}

static gboolean
focus_in_event_callback (GtkWidget *widget,
			 GdkEventFocus *event,
			 gpointer user_data)
{
	CredenzaSearchBar *bar;

	bar = CREDENZA_SEARCH_BAR (user_data);

	g_signal_emit (bar, signals[FOCUS_IN], 0);

	return FALSE;
}

static void
credenza_search_bar_init (CredenzaSearchBar *bar)
{
	GtkWidget *alignment;
	GtkWidget *hbox;
	GtkWidget *label;

	bar->details = g_new0 (CredenzaSearchBarDetails, 1);

	gtk_event_box_set_visible_window (GTK_EVENT_BOX (bar), FALSE);

	alignment = gtk_alignment_new (0.5, 0.5,
				       1.0, 1.0);
	gtk_alignment_set_padding (GTK_ALIGNMENT (alignment),
				   0, 0, 6, 6);
	gtk_widget_show (alignment);
	gtk_container_add (GTK_CONTAINER (bar), alignment);

	hbox = gtk_hbox_new (FALSE, 6);
	gtk_widget_show (hbox);
	gtk_container_add (GTK_CONTAINER (alignment), hbox);

	label = gtk_label_new (_("Search:"));
	gtk_widget_show (label);

	gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);

	bar->details->entry = gtk_entry_new ();
	gtk_entry_set_icon_from_stock (GTK_ENTRY (bar->details->entry),
				       GTK_ENTRY_ICON_SECONDARY,
				       GTK_STOCK_FIND);
	gtk_box_pack_start (GTK_BOX (hbox), bar->details->entry, TRUE, TRUE, 0);

	g_signal_connect (bar->details->entry, "activate",
			  G_CALLBACK (entry_activate_cb), bar);
	g_signal_connect (bar->details->entry, "icon-release",
			  G_CALLBACK (entry_icon_release_cb), bar);
	g_signal_connect (bar->details->entry, "focus-in-event",
			  G_CALLBACK (focus_in_event_callback), bar);

	gtk_widget_show (bar->details->entry);
}

GtkWidget *
credenza_search_bar_borrow_entry (CredenzaSearchBar *bar)
{
	GtkBindingSet *binding_set;
	
	bar->details->entry_borrowed = TRUE;

	binding_set = gtk_binding_set_by_class (G_OBJECT_GET_CLASS (bar));
	gtk_binding_entry_remove (binding_set, GDK_Escape, 0);
	return bar->details->entry;
}

void
credenza_search_bar_return_entry (CredenzaSearchBar *bar)
{
	GtkBindingSet *binding_set;
	
	bar->details->entry_borrowed = FALSE;
	
	binding_set = gtk_binding_set_by_class (G_OBJECT_GET_CLASS (bar));
	gtk_binding_entry_add_signal (binding_set, GDK_Escape, 0, "cancel", 0);
}

GtkWidget *
credenza_search_bar_new (void)
{
	GtkWidget *bar;

	bar = g_object_new (CREDENZA_TYPE_SEARCH_BAR, NULL);

	return bar;
}

CredenzaQuery *
credenza_search_bar_get_query (CredenzaSearchBar *bar)
{
	const char *query_text;
	CredenzaQuery *query;

	query_text = gtk_entry_get_text (GTK_ENTRY (bar->details->entry));

	/* Empty string is a NULL query */
	if (query_text && query_text[0] == '\0') {
		return NULL;
	}
	
	query = credenza_query_new ();
	credenza_query_set_text (query, query_text);

	return query;
}

void
credenza_search_bar_grab_focus (CredenzaSearchBar *bar)
{
	gtk_widget_grab_focus (bar->details->entry);
}

void
credenza_search_bar_clear (CredenzaSearchBar *bar)
{
	gtk_entry_set_text (GTK_ENTRY (bar->details->entry), "");
}
